Chord & FretHarmonic field of Bb minor
The harmonic field of Bb minor is the set of seven chords born from the Bb minor scale — one on each of its notes. The table shows each in two versions: the triad (the three-note chord) and the seventh chord (the same chord with a fourth note, the seventh, that enriches it).
Notes: Bb – C – Db – Eb – F – Gb – Ab| Degree | Triad | Seventh | Function |
|---|---|---|---|
| i | Bbm | Bbm7Bbm7Bbm7Bbm7 | tonic |
| ii° | C° | Cm7b5 | subdominant |
| III | Db | Dbmaj7Dbmaj7Dbmaj7Dbmaj7 | tonic |
| iv | Ebm | Ebm7Ebm7Ebm7Ebm7 | subdominant |
| v | Fm | Fm7Fm7Fm7Fm7 | dominant |
| VI | Gb | Gbmaj7Gbmaj7Gbmaj7Gbmaj7 | tonic |
| VII | Ab | Ab7Ab7Ab7Ab7 | dominant |
The roman numerals mark the chord's position in the scale: I is the first degree, V the fifth. Uppercase = major chord; lowercase = minor; ° = diminished.
Tonic chords stabilize and rest; subdominant chords prepare motion; dominant chords build the tension that asks for resolution.
This is the natural-minor field. In practice the v often becomes V (major) or V7 — borrowed from the harmonic minor — to create the leading tone that pulls back to the tonic.
The tonic chord on all four instruments
In Chord & Fret, open the Circle of Fifths, pick Bb minor and hear every degree — triads and sevenths, with fretboard positions and the key's secondary dominants. Open in Chord & Fret →